Calculating device.



No. 673,877. Patefited May I4, 19m.

0. s. LABUFISH.

CALCULATING DEVICE.

(Application filed Sept. 18, 1900.

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c. s. 'LABOFISH.

CALCULATING DEVICE.

(Appliution and Sept. 18, 1900,

(lo Iodal.)

UNITED STATES PATENT OFFICE.

CHARLES S. LABOFISH, OF WASHINGTON, DISTRICT OF COLUMBIA.

CALCULATING DEVICE.

SPECIFICATION forming part of Letters Patent No. 673,877, dated May 14, 1901.

Application filed September 18} 1900- Serial No. 30,430. (No model.)

111621.118 used for such purposes and to' provide sure means of extending the usefulness of such devices by constructing the same so com pactand of sucha nature andso entirely automatic as to make its application to a typewriting machine perfectly practical, so that the mere writing of a column of figures on the type-writer will simultaneously register.

and add the said column of figures within the device. automatically without encumbering the typewriter in the least.

The application herewith presented is intended as an improvement on my application, Serial No. 21,793, filed June 27, 1900, reference being had to the accompanying drawings, forming part of my specification, in which Figure 1 is a longitudinal sectional view of the calculating device. Fig. 2 isa cross-sectional view on the line 2 2 of Fig. 1. Fig. 3 is a cross-section'on the line 3 30f Fig. 1. Fig. 4 isa cross-section on the 1mm of Fig. 1. Fig. 5 is a cross-section on the line 5 5 of Fig. 1. Fig. 6 is a plan view of the base and rocker. Fig. 7 is a side elevation of the rocker. Fig. 8 is a cross-sectional view of a modified construction of my calculating device. Fig. 9

I is a detailed view of the coupling seen in Fig.

1. Fig. 10 is a view of the device fitted to the type-writer. Fig. 11 is a detailed View of the means employed to bring any one of the registering-wheels in engagement with the shaft. Fig. 12 is .a detailed view of one of the finger-pieces, cam, spring, and guide. Fig. 13 is a detailed view of the detachable plate holding theifinger-pieces and cams. Fig. 14. is a front viewofthe modified coustrnction shown in Fig. 8.

portion of the shaft.

is secured to the type-writer frame X, preferably above the upper bank of keys, intermediate between the movable carriage and the keyboard. Uprights 11 are secured to the said base by means of screws 12. A hollow shaft 13, having a longitudinal slot-14,

,is formed with conical ends 15 and is jourhas a central opening corresponding in diameler to that of the registering-wheels. The registering-wheels have thus a perfect bearing on the sleeves and are separated one from another by the flanges 18, leaving the internally notched gear-wheels free from touching the shaft or catching in the longitudinal slot of the shaft.

At a point below the registering-wheels and parallel therewith is a shaft 22, held securely between the two uprights by the screw 23. This shaft is partially hollow and slotted at 24. In the slotted portion of the shaft is a toothed rack 25, formed with a reduced extension 26, which slides freely in'the hollow A spring 27 presses the toothed rack normally forward. Within the hollow shaft 13 is fitted to slide freely a rod 28, having a series of pins 29 set therein. These pins correspond in number to the number of registering-wheels in the,device and are set'at equal distances apart, the distance between each pin 29 and the other being exactly eight-ninths of the distance between slidable rod 28 by means of a coupling 30,

which has a journal-hole 32, in which the rod of graduation-marks corresponding in num.

bar and distance apart to the teeth 'of the rack 25, is secured to the coupling 30, over the centralopening in which the post 33 has its bearing, passing through the aperture made in 'the casing and having a knob 35 fitted on its outer extremity. When the knob 35 is pushed inward, its graduationmarks indicate the registering-wheel in engagement with the revolving and sliding rod, as is clearly shown in Fig. 1.

A spacing-dog 40, of substantially the sam e character as is used in type-writers in conjunction with a toothed rack to slide the typewriter carriage step by step forward, which may be of any approved shape or form, is

pivoted to the right-hand upright by the screw 41 and has an extending arni 42 projecting from it, reachiug the type-writer key bearing the numeral O, engaging it near'its key top, and an oifset 42, whereby it can be depressed without disturbing the type-Writer key Y. The dog, with its projecting arm,-is

held normally upward by the spring 43andisin constant engagement with the toothed rack 25. The rocking of the projecting arm 42v causes the dog to spacethe'rack forward, it being coupled with theslidable rod "28, hay,-v ing the pins 29 setthereimcarries it along,

the pins engaging the gear-wheels20 of the the type-writer key-stems. have a free move-' registering-wheels in succession at each deprees e fihe, rei c ngarm l A rocker 44, composed of a strip ofsheet meta ha n in o s te i lots4 m: which 99. s rmed ik a iesv st p a being one step higher than the other, so that theel'o gated slot engaging the type-writer key-h arihg the numeral 9" is close undereath the key-top, while the slot. engaging the type-writer key bearing the numeral '1'. iseight spaces below the key-top, 'as is clearly shown in Figs. 6 and" 7; From the strip44 projecttwo arms 46' 46. These arms are.

pivotedto the two uprights by the screws 42 and 47. The rocker is held normally upward V by the spring 48 under the left-hand arm, so that'the strip 44, forming a bridge over the two, arms, has a vertical movement in front of the calculating-devicecasing O.

The. 9 low shaft 13 is provided with a solid extension 50 of areduced dianieter at its left ha d andprojects through the left-handupright 11 and through the casingO. Upon the extended end 50 is secured one partofa jawclhtts'h51. Thefother partof the clutch 52 has. te 'semihee e ut pon t per p ery and is journaled loosely upon the extended end 50, being. held in mesh with the fixed portion. of, the clutch by the spring 53 and thumbnut 54, which passesthrough the casing O, for the purpose hereinafter described, as cl-early shown in Fig. 1.

A sector 48'; having nine gear-wheel teeth ,in constant mesh with the toothed portion of the jaw-clutch, is secured to the arm 46, so

that the rocking of the rocker causes the sector to turn theshaft 13 on its forward movement and to release it on its return, leaving the shaft with its registering-wheels at rest. (See Figs. 1 and 2.)

In'order to provide for carrying one in working this device, it is necessary to have means for turning one wheel a distance of onenum;

ber ateach rotationof the next adjacent Iteg- .istering-wheel' representing a. lower denoinirevolution ofthe adjacent registering-wheel representing a lower denomination, while the gear-wheel 56 has ten teeth and is in constant 5 mesh with the gear-wheel 20'ot" the register- 7 j ing -wheels. (see Figs. 1, 3, and L) In orderto hold. the registering-wheels in lproper position after they have been turned thedesired'distance, a shaft 57 is held'between the twouprightsand a'series of'sleeves 5'8 and d'etents 59fa're fitted. alternately upon the said shaft',lso that;the sleeveswill hold the detentsdi rectly opposite the gear-wheels 56, which are in engagementywith those of" the jregjstering-wheels. Springs 60. are secured gtotheid'etents, their outer ends impinging againsta rod 60, also held between the two iuprights, asclearly shown in Figs. 1 and 4. This constitutes the tens-carrying; mechanism of this calculating device.

Thedevice is operated by the depression of i thetype-writer keys bearing thenumerals it is desiredto add. Previous to the depression of -the keys the hollow tube 35' is pushed inwardly until one of the pins 29 engages the registering-wheel representing the highest denomination Of' the number desired to add. This operationis rendered automatic in this device. i

' A'rock-shaft'61isjournaledinbearings 62;

preferably arranged on the right-hand inner "lhe horizon'talarm is heldupwa'rd by aspring I 65, its normal positionv being to hold the verp .130 'ingOas to allow the tube 35" to comeout' of tical arm 63 at such a distance from the easthe casing its entire length-'that is, until the pin 29'has passed the internal notches of'the first registering-wheel, representing units..

A plate 66 is cast with guide-slots 67, in which a number of cams 68, corresponding to the number of registering-wheels in the device and being of different pitch, are held to slide. Finger-pieces 70, provided with stems 69, passing through the plate 66, are secured to the cams, so as to form a unitary structure. Springs 71 are interposed between the fingerpieces and the plate to hold the cams close to the inner side of the plate, as clearly shown in Fig. 12. When a finger-piece is pushed, the cam rides over the horizontal arm and depresses it a distance corresponding to the pitch of the cam, thereby causing the vertical arm to push the tube inward the number of graduations according to the pitch of the cam. The finger-pieces are marked l,

10, 100, 1000,&c. The cams secured to the finger-pieces are of such pitches or depths as when the finger-piece marked 1 is pushed in its cam willdepress the horizontal arm only sufficient to cause the vertical arm to push the tube 35 in a distance of one I board to introduce the required number of finger-pieces close to the front of the typewriter or when thedevice is mounted on a pedestal, the cams may be entirely dispensed with and the finger-pieces mounted on a plate directly over the horizontal arm, as is shown istering-wheel', represenlinglens.

in the left-hand side of the keyboard in Fig.10.

Now we will suppose, for instance, that the number six hundred and five is to be added to a number already indicated in the device. The finger key marked 100 is pushed.

This causes the vertical arm to push the tube 35 ina'distance of three marks, indicating that pin 29 is in engagement with the third registeringwheel to the left, representing hundreds. The type-writer keymarked 6 is struck to print. The rocker-slot engaging the key bearing the numeral 6 is at such a distance from'the key as to move the sector which is secured thereto a distance of six teeth, thereby turning thcshaft 13 a distance of six-tenths of a revolution, adding six to the number already indicated in the device. When the'key is releasedand the rocker, with itssector, and. the split (log, with its projectin g arm, return to their. normal positiomthe rack 25 jumps one tooth forward, bringing the pin 29 in engagement with the second reg- The. key

I bearing the O is struck fto print. The projecting arm engaging the key marked O being'underneath the, rocker (see Fig. 6) in its descension leaves the rocker at rest, and

therefore thesector does not turn the registering-Wheel in engagement, but on its return of engagement with the shaft 13, and all the,

numbered type-writer keys may be used without affecting the registry of the device in the least. I

The device is provided with a suitable casing C, in which a series of sight-slots D are made on its top, through which the registry of the device can be seen, and vertical slots E in the front, in which the projecting arms of the rocker and dog have a free vertical movement, as shown in Fig. 10.

After a column of figures has been added it is necessary to return the registeringwheels to zero. To this end a thumb-piece 54, referred to heretofore, is secured upon the'extreme left end of the shaft 13, which passes through the casing C. When the pin 29 is past the first gear-wheel 20 and all the registering-wheels are out of engagement, the registering-wheels are thrown into engagement individually, beginning from the right, and turned by the thumb-piece 50 until returned to (A O. 7)

Figs.8 and 14 illustrate a modified construction of my calculating device. In this construction the rocker 44 and the dog 40 are entirely dispensed with. The slidable rod 28 terminates intoa toothed rack 25 and is in engagement with a gear-wheel A, to which is se= cured a ratchet B. A universal bar 0 is suspended from a rock-shaft D by the two rods E E. To the rod E is secured a tooth F, which when the type-writer numbered keys are depressed moves the ratchet one tooth, causing the slidable rod to bring the registering-wheels in engagement successively. Sec

vtors G are in engagement with each typewriter key and the revoluble shaft, each sector having a number of teeth indicated by the key with which it is in engagement. The depression of the v ype-writer keys brings the sectors G in engagement with the shaft and turns same a distance corresponding to the number of teeth on the sectors. When the pressure upon the keys is released, the sectors having oblong slots at their fulcrumed' points disengagev from the shaft by sliding backward and return to theirnornlal position by their own gravity, as shown in Figs. 1 and 14.

'It will be seen that this device is extremely simple, neat, and compact in its construction and very efficient in its operation.

writing of the figures in addition'to one touch of a finger-piece is sufficient to add a row of The mere.

figures.- No furtherattention: is required, and it does not encumber the type=writer in the least, and while it is specially designed for use in conjunction with a type-writer the device may be mounted on a pedestal and used as an adding or calculating device or counter.

It is evident that numerous slight changes the combination of a base, uprights, a series of registering-wheels supported thereby, a rodgprovided with suitable means for engaging the registering-wheels successively heldslidable through the central openings of the said registering-wheels, of a pivoted split dog adapted to operate a rack to control the en- .gagement of the registeringwheels succesmight be made in the general arrangement and formation of partsherein shown and described without departing fro m the spirit and scope of my invention. Hence I would have it understood that I do not limit myself to the precise detailsshown, but consider myself at liber'tyto make such changes and alterations as fairly fall within the spirit and scope of my invention.

Having fully described'my invention, what I claim as new, and desire'to secure by Letters Patent, is' I 1. A calculating'device coinprisiriga base, uprights, a revoluble hollow shaft supported by the uprights, a series ofregistering-wheels mounted thereon, of a rod. provided with a series of projecting studs, adapted to engage the registering wheels successively, held slidable within the said hollow shaft, substantially as described.

2'. A calculating. device comprising a base, uprights,- a hollow shaft between the said'uprights, a series of registering-wheelsmounted onsaid shaft, of aslidable rod having a series of studs, a rack coupled thereto, a dog for'op' eratiug said rack to slide said -rod forward to engage the registering-wheels successively, I j

' uprights, a'hollow shaft-supported thereby,a

7 substantially asdescribedl 3. A calculating device comprising-a base,

I uprights, a' revoluble hollow shaft, a series of registering-wheels mounted thereon,-a rod provided with. suitable means for engaging the registering-wheels successively held slidable therein, of afixed hollow shaft and a rack coupledwith the saidslidable rod held s'lidabletherein, as set forth,

4. A calculating device comprising'a base,

uprights," a 'revoluble hollow shaft held between said uprights, aseries of registeringwh'eels mounted thereon,of sleeves interposed between the said shaft and'the central open= ings of the'registering-wheels, as and for thepurpose specified. I

5. A calculating device comprising a base, uprights, arevoluble and a fixed hollow shaft heldb'etween the said uprights, a seriesof registering-wheels upon the revoluble' shaft,

'andwa rod provided with suitable means for engaging theregistering-wheelssuccessively,

within the said revol-uble shaft, a rack within' the said fixed hollow-shaft,"a dogholding said 6o shaft against the-tension of a-sp'ringto limit the movemeut'of the saidrack, saidrackioeing. coupled to the said slidable rod, .aszset forth. I

- 6-. A calculating device-comprising'a'base, uprights, aseries of registering-wheels sup portedithereby, a rod provided with suitable means for engaging. the registering,- wheels successively held slidable through the central openings of the said registering-wheels, a slidable rack coupled to the said rod, of a pivoted split dog operating said rack having apro- .jecting arm whereby the said dog is rocked to space the rack outward, substantially as dee scribed.

7; In a calculating device for a type-writer sively, having an extending arm engaging the type=writer key bearing the 0 mark upon its key-top,-substantially as described.

8; A calculating device comprising a base,

uprights,-arevolublehollow shaft s'upported thereby, a series of registeringwheels mount 'ed thereon, a rod provided with suitable means for engaging the registering wheels successively, held-slidablewithin the said hol low shaft, of a jaw-clutch one part of which -is-secured=to the said rev'oluble shaft, and, y

the other beingloosely mounted thereon and i having gear-teeth out upon its periphery; pivoted-rocker adapted-'to'engagetlieclutch a and having an extending arm whereby it is;

j actuated to turn the shaft in one direction and release it upon its return, substantially 1 as described.

9. A calculating device comprising base;

shaft", a=rod provided with suitable means for held slidable within. thesaid hollow shaft,

a rack coupled with the saidrod and adapted to slide saidrod forward, of a'tube or rod.

bearinggradu'atio'n-marksupon its periphery se'cured to the said coupling, as purpose specified.

10. Acalculating device comprising abase and a'-'series of r'egistering=wheels mounted thereon, a rod provided .with'suitable' means.

I in and forthe j is for engaging the registering-wheelssuccess' sively held's'lida'ble through the centralopem ings of the said registering- 'wheels; a rocker provided with suitable ineansfor turnin'g and f sliding the-said rod, vheld 'pivotally upon the comprising, a? base, a series 1 of .,registering=.

I20 base, of an rock-shaft havingrayertical arm i adapted to pushthegsaid slidable rod'gin-f; wardlyito rengage any oneofthe'said seriesof; registering-wheels;{facing,the saidcen' u trally slidable rod, substantiallyasdescribedzi 11.; calculating device for a type-writer type-writer keys, a rock-shaft having a Vertical arm facing the said slidable rod, and a horizontal arm upon which a series of auxiliary finger-keys are bearing, said finger-keys being adapted to impart variable motion to the vertical arm, substantially as described.

12. A calculating device comprisinga base, a series of registering-wheels mounted thereon, a rod provided with suitable means for engaging the registering-Wheels successively held slidable through the central openings of the said registering-wheels, in combination with a series of auxiliary finger-keys adapted to actuate a rock-shaft to return the said slidable rod to rengage the said registering- I 5 wheels, or any one of the series, as set forth.,

In testimony whereof I have signed my name in the presence of two witnesses.

CHARLES S. LABOFISH. Witnesses:

B. LEWIS BLACKFORD, HELEN L. ABNER. 

